Shoe-sewing machine.



No. 827.699. PLTLNTLD AUG. v, 1906.

T. L. ALLLT.

SHOE SEWING MACHINE.

APPLICATION TILLD TLB. 1e. m91.

WWNLEE f5 o itiachines; rollowmg to loe ull, clear., andl i ion, such as wil.

to which it appertains to Imake and use 'the same.

The present invention relates to shoe-sewing machines, and more particularly to such machines which are designed to stitch the welt of a hoot or shoe to the lasted upper and insole.

in a shoe-sewing machine the parts acting directly upon the thread to formthe stitch and upon the material to accomplish the feed-such, for exampleI` as the needle, looper, thread-"migrer, and awl-must perform their operations within a very limited space, and it has always heen found difficult in this art to provide a simple and effective 'actuating mechanism therefor which shall cause them to perform their functions in due relative order and keep them out of the way of each other and out of the way of the shoe, which must frequently be held at varying inclinations by the operator to properly position the same. 'With a view of improving this class of machines as to the above stated-features l. have provided a thread finger or measurer having a combinedoscillating and reciprocating movement, a device which I believe to be new in the art, and have further combined such a device with a looper having a combined oscillating and reciprocating move-l ment, which latter though not a novel device has never been combined with a thread- Y finger having the movements above referred to.Y By combining these two devices and providing suitable connecting mechanism said devices are brought into proper operative relation to each other and to the needle to perform their combined and separate functions and are retracted out of lthe way of the other operating parts and out of the way of the work in a simple and effective manner.

The drawing is a side elevation of a sewingmachine embodying the invention. 4

For the purposes of illustrating the present invention it is shown lapplied to the sewing- Specification of Letters Patent.

m lad February it), i897. Serial No. 623,708.

Patented Aug. 7, 1906.

machine disclosed in Letters Patent of the United States issued to the Goodyear Shoe Machinery Company of Portland, Maine, as the assignee of Felex Doucet, No. 507,530, of October 3i, 1893, and except as hereinafter speciiied the parts may be and conveniently l are the same as similar parts in said machine. 6o ln the drawing, o is the head of the ma| chine; ,the needle; @,the needle-segmentpivoted at d to swing toward and fromthe work in an arc or" a circle.

The letter f represents a rotary or oscillating shuttle, havin hooks h, and gis the loopspreader mounte in bearings fn, n, actuated by a lever p and spring w, and t represents the gage or work support,

All of the above parts may be formed and 7o arranged and operated as in the machine ofI the patent hereinbefore referred to. The improved looper is shown at A, and it is actuated. so that its thread-carrying end, which is offset, as shown, will have longitudi- 7 5 nal movement toward the needle b land an v,oscillating movement around the same toV throw the needle-thread in .the hook of the needle Within lan overhanging portion of thel heade. The looper and its shank are bored 8o out or .y provided Awith a/passage through which the thread passes.\/

The shank a of the looper is mounted in a bearing a2, and it is actuated Within said bearing in such manner that it imparts to the 8 5 looper A the movements above referred to.

Any suitable construction may be emloyed to secure the above-suggested results; but I refer to form the shank a' of the looper A and the bearing a2 with inclined guide- 9o grooves and projections which will cause the r looper-shank a to travel longitudinally in its bearing as it is rotated or oscillated therein. As shown in the drawing, the inclined guidegroove and projection take theform of an external screw-thread e3, formed upon the looper-shank e, and an internal screwthread o", formed in the bearing (L2, the said screw-threads causing the looper-shank to move longitudinally as it is rotated or oscillated and to impart similar movement to looper A.V

The looper may be oscillated by any suitable means, but in the machine of the draw# ing such means comprises a lever a, which is pivoted at a within the overhanging por- IOO Lad

'all

tion of the 'frame a and is provided with a segment-gear e7, which meshes with a gear es, connected to the shank a of the looper A, the opposite en,d oi' the lever a5 being pivot-A ally connected to a lever o, ulcrumed at o1, the rear end o being acted upon by a lever` o, which is Julcrurned at ctw and which has a cam-roll at its upper end acted upon by a eamgroove in the periphery of the cam C.

The above arrangement is such that a movement of the lei/*er o5 around its ulcrum a will impart an oscillating movement or rotationto 'the looper-'shank e', which by means of the inelines ai* ande1 is caused to travei longitudinally its bearing, thus imparting a combined oscillating and reciprocating movement to the looper A. i

rEhe gear as is lengthened, shown in the drawing, morder that it may move across the gear a7 and still keep in mesh therewith. it is ci course that ot1 equivalent mechanism may ei'n'ploy in lieu ol' the segment a7 and that equivalent devices may be employed to impart longitudinal movement to the looper instead of the screwthremlse3 and o4 also that the construction and relative arrangement of the gear a and looper may be varied and equivalent results secured.

Y the thread-measurer, which in tl. present invention has im )arted to it an oscillating movement and a longitudinal reciprocating movement in order that it may be raised up out of the way to clear the sur'- -lace of the shoe-sole while theshoeis held in an inclined position when sewing around the shank. This is accomplished in the machine or' the drawing by forming the measurer M with a shank m, which is mounted in a bearing m and which, as in the c ase of the ,loopen has inclined bearings m2 and m3, arranged to impart a longitudinal movement to the shank m and thread-iinger M'as theAV said shank is oscillated.

Any convenient' mechanism may be employed to impart to the shank the oscillating movement, that shown in the drawing comprisin y a link or bar 'm4, which is loosely connected by the stud m5 to an arm fm of the shank lm and which .link or'bar mi is loosely connected atA its other end to a lever m7, ful crumed at' m8 and actuated by a cam-groove m in the face of cam C.

A rotation of cam C will cause a forward and backward movement of the link or bar m4, and a rotation or oscillation of the shank fm, which by means o'l the inclined bearings m2 ma will be moved u and down, thus imparting to the threader M an oscillating movement and avertical7 reciprooation, and thus when retracted after measuring dil' the thread for the next stitch it will be lifted toelear therwork, as before stated. l

The take-up illustrated in connection with the present invention is actuated in such a seneca plished by moving sai take-u in a curved y path for a limited distance an at the same time 4lifting the iulcrum or center around which said take-up moves, to thus au` ment y the thread-pulling capacity of said ta e-up.

ln the machine of the drawing the take-ig) Ois pivoted'at o and carries a suitable threa roll o. Any suitable means may be employed to move the takeup O around its fulorum o, that shown in the drawing comprising a'link o2, oner end of which is pivotally connected to the take-up at o3 and at its other end ivotally connected to a lever L, which is fu crumed, atl to frame c and which carries a suitable cam`-roll, (not showin) aetuated by a cam (not shown) on ,the camin order to raise the iulcrum o of the takeup O at the same time that said take-up is moved around its iulcruni in the machine ol" the drawing, said liulcrum ov is mounted upon a disk D, which is mounted tooscillate in a suitable bearing d`^I in the trames, said disk D being oscillated by a link d which is pivotally connected'at d2 to said disk D, and whichat its other end is ivotally connected to a lever L2, which is fu crumed at Z2 to the frame o, and which is actuated by a camroll (not shown) and a cam (not shown) mounted upon the camshaft C.

The above-described arrangement is such lthat as the lover'L and link o2 are retracted to raise the take-up 0 the lever L2 and link d are also retracted to move the disk D, and thus raise lthe fulcrum o and the take-upA Q,

increasing the pull of said take-up without increasing the throwfthereof around the fulcrum.

This take-up mechanism forms no part of the present invention, but is illustrated and described herein for the urpose of showing the preferred .formof t e sewing-machine embodying my invention.

The operationof the machine of' the drawing in s'o far as the same is material to the present application is as follows: As the`nee die starts towardv the Work the take-up gives down slightly to allow the threadn1easu'rerv to draw o'' sul'licient thread for the next loo drawn back by the needle, and thev three"- 'measurer commences to rotate, its motion of rotation by means of -its inclined bearings imparting to its thread-engaging end a motion across the line of thread outward .and upward troni the work to idraw off the required amount of thread. During this operation the needle passes through the Work and the looper is rotated, its motion of rotation by means f its inclined bearings causing its threadnoarrying end to move downward and IOO around the needle to place the thread in the hook of the needle, the needle then. beginning to recede and the thread-measurer to" rotate in an opposite direction to that of its former rotation, and its thread-carrying end` moves downward and inward toward the Work, iving up its thread to the receding needle. n the meantime the looper begins to rotate in a direction o posite to that of its former rotation, its threa -carrying end moving np- Ward,keeping in line with the pull of the' thread by the receding needle. The loop of thread is then drawn through the Work spreadi by the,

I claim as novel and desire to secure by Letters Patent of the United States- 1. A shoe-sewing machine, having, in combination, a curved hooked needle, a threadmeasurer, located onfthe opposite side of the 'Work from the needle 'and acting to supply.

slack thread to the needle on the side thereof adjacent to the last preceding needle-hole, and 'means to impart a combined oscillating and reciprocating movement to thel thread measurer, substantially as described.

2. A shoe-sewing machine, having, in com# bination, a curved needle, a thread-measurer having a combined reciprocating and oscillating movement, a looper, also having a comn bined reciprocating and oscillating movement and connected mechanism for. actuatin T the needle, thread-rneasurer and looper,

inithe hook of the needle While projected through the Work and the thread-measurer to engage the thread between the needle and the looper to suppl',T slack thread for the next retreat of the needle, substantially as described.

In testimony -whereof I affix my signature in presence of two Witnesses.

FREDERICK L. ALLEY. Witnesses:

IDA B. l/VINGATE, S. A. Loan.

ac ing` to cause the looper to la3T the threadl 

